Question Details

Detailed explanation and options for the selected question.

The sides of a triangle are 13 cm, 14 cm, and 15 cm. What is its area?

A. 84 cm²
B. 90 cm²
C. 96 cm²
D. 100 cm²

Explanation:

Using Heron’s formula, semi-perimeter = (13+14+15)/2 = 21. Area = √(21(21-13)(21-14)(21-15)) = 84 cm². Other options are incorrect.

Related Topics

How to Find Inverse Functions

Revision Notes

How to Calculate Modular Inverses

Revision Notes

How to Solve Rational Equations (Equations with Fractions)

Revision Notes

How to Convert Between Inches and Centimeters

Revision Notes

How to Estimate Roots Using the Newton-Raphson Method (Intro)

Revision Notes

How to Solve Linear Equations (Single Variable)

Revision Notes

How to Convert Fractions to Percentages?

Revision Notes

How to Simplify Rational Expressions

Revision Notes

How to Work with Mutually Exclusive and Non-Mutually Exclusive Events

Revision Notes

How to Use the Circle-Sector Area Formula

Revision Notes